MEMS Gyro Random Drift Model Parameter Identification Based on Two-Stage Recursive Least Squares Method

Zhao Hua Liu; Jia Bin Chen; Yu Liang Mao; Chun Lei Song

doi:10.4028/www.scientific.net/AMM.220-223.1044

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 220-223MEMS Gyro Random Drift Model Parameter...

MEMS Gyro Random Drift Model Parameter Identification Based on Two-Stage Recursive Least Squares Method

Abstract:

Autoregressive moving average model (ARMA) was usually used for gyro random drift modeling. Because gyro random drift was a non-stationary, weak non-linear and time-variant random signal, model parameters were random and time-variant, too. For improving precision of gyro and reducing effects of random drift, this paper adopted two-stage recursive least squares method for ARMA parameter estimation. This method overcame the shortcomings of the conventional recursive extended least squares (RELS) algorithm. At the same time, the forgetting factor was introduced to adapt the model parameters change. The simulation experimental results showed that this method is effective.

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Periodical:

Applied Mechanics and Materials (Volumes 220-223)

Pages:

1044-1047

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.220-223.1044

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Online since:

November 2012

Authors:

Zhao Hua Liu, Jia Bin Chen, Yu Liang Mao, Chun Lei Song

Keywords:

ARMA, Gyro, Random Drift, Two-Stage Recursive Least Squares

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